Nuclear_42
Thread starter
A little bit off topic. Most Subaru call for 23 psi bypass valve. Running a fram endurance or amsoil will mean way more bypassing events in low temp start up and high revs when hot with the generic 10-18 psi settin gs. Hence my reasoning for going with the BOSS. Way less resistance decreases bypassing events even further during cold starts.None of those filters are going to have a problem with "flow". Efficiency is what matters since that is what is directly correlated to wear.
Filtering is what a filter is supposed to do.